TW201326675A - Lighting fixture - Google Patents
Lighting fixture Download PDFInfo
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- TW201326675A TW201326675A TW100147180A TW100147180A TW201326675A TW 201326675 A TW201326675 A TW 201326675A TW 100147180 A TW100147180 A TW 100147180A TW 100147180 A TW100147180 A TW 100147180A TW 201326675 A TW201326675 A TW 201326675A
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0005—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type
- G02B6/001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type the light being emitted along at least a portion of the lateral surface of the fibre
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/61—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear light sources
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Planar Illumination Modules (AREA)
Abstract
Description
本發明是有關於一種照明燈具，且特別是有關於一種包括導光柱之照明燈具。The present invention relates to a lighting fixture, and more particularly to a lighting fixture including a light guiding column.
發光二極體已廣泛地被應用在照明燈具中。由於發光二極體是點光源，因此，這樣的點光源用於一般照明用途時，容易使得直視此點光源的人眼感到不舒服。為改善此問題，在習知技術中，提出將發光二極體置於導光柱之一端，以充分均勻地分散發光二極體所發出之光束。Light-emitting diodes have been widely used in lighting fixtures. Since the light-emitting diode is a point light source, when such a point light source is used for general lighting purposes, it is easy to make the human eye directly looking at the point light source uncomfortable. In order to improve this problem, in the prior art, it is proposed to place the light emitting diode at one end of the light guiding column to sufficiently uniformly disperse the light beam emitted by the light emitting diode.
為增加照明燈具之總出光效率，研發者多從增加導光柱之出光效率方面著手。在習知技術中，利用在導光柱的入光面上配置特殊之結構，或增加位於導光柱之反射條的面積來增加導光柱之出光效率。然而，無論上述哪一種設計皆會使導光柱的均勻性變差。In order to increase the total light output efficiency of lighting fixtures, developers have begun to increase the light extraction efficiency of the light guide column. In the prior art, the light-emitting efficiency of the light-guiding column is increased by arranging a special structure on the light-incident surface of the light guide column or increasing the area of the reflection bar located on the light guide column. However, regardless of which of the above designs, the uniformity of the light guide column is deteriorated.
有鑑於此，本發明提供一種照明燈具，係可盡量在不影響均勻性的情況下，提升總出光效率。In view of this, the present invention provides a lighting fixture capable of improving the total light extraction efficiency as much as possible without affecting the uniformity.
本發明提供一種照明燈具，包括至少一發光元件以及導光柱。發光元件適於發出光束。導光柱具有入光面、相對於入光面之端面、以及連接入光面與端面之周面。周面包括平滑曲面、與平滑曲面連接之凹槽面、以及與凹槽面連接的反射面。發光元件配置於入光面旁。凹槽面配置於反射面相對的兩側。凹槽面上之多個凹槽的延伸方向實質上與導光柱之延伸方向平行。The invention provides a lighting fixture comprising at least one light emitting element and a light guiding column. The illuminating element is adapted to emit a light beam. The light guide column has a light incident surface, an end surface with respect to the light incident surface, and a peripheral surface connected to the light surface and the end surface. The circumference includes a smooth surface, a groove surface connected to the smooth surface, and a reflection surface connected to the groove surface. The light emitting element is disposed beside the light incident surface. The groove faces are disposed on opposite sides of the reflecting surface. The extending direction of the plurality of grooves on the groove surface is substantially parallel to the extending direction of the light guiding column.
基於上述，本發明之照明燈具藉由將導光柱之部分區域設置成凹槽面，並將凹槽的延伸方向設計成平行於導光柱的軸向，藉此除了可增加導光柱之出光效率，進而提升照明燈具之總出光效率之外，更可將對均勻性的影響程度降至最低。此外，在本發明之照明燈具中，由於導光柱之周面包括平滑曲面與凹槽面二者，使得照明燈具的所發出之光束不致於過度擴散。如此一來，本發明之照明燈具在照明應用上具有特佳的照明品質。Based on the above, the illumination lamp of the present invention has a portion of the light guiding column disposed as a groove surface, and the extending direction of the groove is designed to be parallel to the axial direction of the light guiding column, thereby increasing the light extraction efficiency of the light guiding column. In addition to improving the total light extraction efficiency of the lighting fixtures, the degree of influence on uniformity can be minimized. Further, in the lighting fixture of the present invention, since the peripheral surface of the light guiding column includes both the smooth curved surface and the concave surface, the emitted light beam of the lighting fixture is not excessively diffused. As a result, the lighting fixture of the present invention has excellent illumination quality in lighting applications.
為讓本發明之上述特徵和優點能更明顯易懂，下文特舉實施例，並配合所附圖式作詳細說明如下。The above described features and advantages of the present invention will be more apparent from the following description.
圖1為本發明一實施例之照明燈具的立體示意圖。圖2為圖1之照明燈具的剖面示意圖。請同時參照圖1及圖2，照明燈具1000包括至少一發光元件100以及導光柱200。發光元件100適於發出光束L。在本實施例中，發光元件100例如為發光二極體(light emitting diode，LED)，但本發明不以此為限。1 is a perspective view of a lighting fixture according to an embodiment of the invention. 2 is a schematic cross-sectional view of the lighting fixture of FIG. 1. Referring to FIG. 1 and FIG. 2 simultaneously, the lighting fixture 1000 includes at least one light emitting component 100 and a light guiding column 200. The light-emitting element 100 is adapted to emit a light beam L. In this embodiment, the light emitting device 100 is, for example, a light emitting diode (LED), but the invention is not limited thereto.
導光柱200具有入光面210、相對於入光面210之端面220、以及連接入光面210與端面220之周面230。發光元件100可配置於入光面210旁，且發光元件100所發出之光束L可自入光面210進入導光柱200中。周面230包括平滑曲面232、與平滑曲面232連接之凹槽面234、以及與凹槽面234連接的反射面236(繪於圖2)。其中，平滑曲面232之面積、凹槽面234之面積、與反射面236之面積在周面230總面積中分別所占之比例可依實際的需求作適當的設計。另外，本實施例之導光柱200之材質例如為聚甲基丙烯酸甲酯(Polymethylmethacrylate，PMMA)，且可用押出成形製程來製作。換言之，本實施例之導光柱200雖具有凹槽面234等特殊之結構，但由於該等結構係沿導光柱200之延伸方向設置，是以不需額外增加製程步驟，而可節省製作導光柱200所需之成本與時間。The light guide bar 200 has a light incident surface 210, an end surface 220 with respect to the light incident surface 210, and a peripheral surface 230 connected to the light surface 210 and the end surface 220. The light-emitting element 100 can be disposed beside the light-incident surface 210, and the light beam L emitted by the light-emitting element 100 can enter the light guide column 200 from the light-incident surface 210. The circumferential surface 230 includes a smooth curved surface 232, a concave surface 234 coupled to the smooth curved surface 232, and a reflective surface 236 coupled to the concave surface 234 (shown in Figure 2). The ratio of the area of the smooth curved surface 232, the area of the concave surface 234, and the area of the reflective surface 236 to the total area of the circumferential surface 230 can be appropriately designed according to actual needs. In addition, the material of the light guide bar 200 of the present embodiment is, for example, polymethylmethacrylate (PMMA), and can be fabricated by an extrusion molding process. In other words, although the light guiding column 200 of the embodiment has a special structure such as the groove surface 234, since the structures are disposed along the extending direction of the light guiding column 200, the manufacturing of the light guiding column can be saved without additional processing steps. 200 cost and time required.
值得注意的是，如圖1、圖2所示，本實施例之凹槽面234可配置於反射面236相對的兩側，且凹槽面234上有多個凹槽U，可破壞光束於導光柱200內之全反射以及促使光束經反射面236反射後自凹槽面234出射，而提高導光柱200之出光效率，進而提升照明燈具1000之總出光效率。另一方面，凹槽U之延伸方向D1實質上與導光柱200之延伸方向D2(例如導光柱200之軸向)平行，藉此可避免凹槽U與光行進方向的夾角過小而使光束容易偏析出導光柱200。意即，藉由本實施例之凹槽面234及其凹槽U延伸方向之設計，可在提升出光效率的同時，又不致於犧牲均勻性。It should be noted that, as shown in FIG. 1 and FIG. 2, the groove surface 234 of the embodiment may be disposed on opposite sides of the reflecting surface 236, and the groove surface 234 has a plurality of grooves U for damaging the light beam. The total reflection in the light guiding column 200 and the light beam are reflected from the reflecting surface 236 and then emitted from the groove surface 234, thereby improving the light extraction efficiency of the light guiding column 200, thereby improving the total light output efficiency of the lighting fixture 1000. On the other hand, the extending direction D1 of the groove U is substantially parallel to the extending direction D2 of the light guiding rod 200 (for example, the axial direction of the light guiding rod 200), thereby avoiding the angle between the groove U and the traveling direction of the light being too small to make the light beam easy. The light guide 200 is segregated. That is, by the design of the groove surface 234 and the groove U extending direction of the embodiment, the light extraction efficiency can be improved without sacrificing uniformity.
本實施例之平滑曲面232與凹槽面234可分別位於導光柱200之剖面A的相對兩側，而發光元件100之光軸X位於剖面A上。換言之，使用者朝-y方向觀看時，會觀看到圓滑之平滑曲面232，而不易察覺位於周面230後半周之凹槽U。意即，本實施例之照明燈具1000中的凹槽U設計，並不會影響使用者視覺上的觀感。另外，在周面230上同時保有平滑曲面232與凹槽面234之設計可使光束不致於過度擴散進而影響照明燈具1000在正視方向上的照度，進而使本實施例之照明燈具適於運用在會議室的照明上或做為檯燈之用。在本實施例中，凹槽U之間距P(pitch)可小於或等於4釐米(mm)。凹槽U之深度D(depth)可小於或等於2釐米。但，本發明不限於此，凹槽U之間距P與深度D皆可視實際需求做適當之調整。The smooth curved surface 232 and the concave surface 234 of the embodiment are respectively located on opposite sides of the section A of the light guiding column 200, and the optical axis X of the light emitting element 100 is located on the section A. In other words, when the user views in the -y direction, a smooth curved surface 232 is seen, and the groove U located in the second half of the circumferential surface 230 is not easily perceived. That is, the groove U in the lighting fixture 1000 of the present embodiment is designed without affecting the visual perception of the user. In addition, the design of the smooth surface 232 and the groove surface 234 on the peripheral surface 230 can prevent the light beam from being excessively diffused and affecting the illumination of the illumination lamp 1000 in the front view direction, thereby making the illumination lamp of the embodiment suitable for use in The lighting of the conference room is used as a desk lamp. In the present embodiment, the pitch P between the grooves U may be less than or equal to 4 centimeters (mm). The depth D of the groove U may be less than or equal to 2 cm. However, the present invention is not limited thereto, and the distance P between the grooves U and the depth D can be appropriately adjusted according to actual needs.
凹槽面234之外形可有多種變化。舉例而言，本實施例之凹槽面234包括多個條狀凸面234a以及多個條狀凹面234b。條狀凸面234a與條狀凹面234b均可朝向與導光柱200延伸方向D2平行之方向延伸。條狀凸面234a以及條狀凹面234b彼此交錯配置且互相連接，而條狀凹面234b形成凹槽U。詳言之，各條狀凸面234a可為部份之圓柱狀凸面，而各條狀凹面234b可為部份之圓柱狀凹面。換言之，本實施例之凹槽面234之斷面形狀可為波浪狀。There may be many variations in the shape of the groove face 234. For example, the groove surface 234 of the embodiment includes a plurality of strip-shaped convex surfaces 234a and a plurality of strip-shaped concave surfaces 234b. Both of the strip-shaped convex surface 234a and the strip-shaped concave surface 234b may extend in a direction parallel to the extending direction D2 of the light guiding column 200. The strip-shaped convex surface 234a and the strip-shaped concave surface 234b are alternately arranged and connected to each other, and the strip-shaped concave surface 234b forms the groove U. In detail, each strip-shaped convex surface 234a may be a partial cylindrical convex surface, and each strip-shaped concave surface 234b may be a partial cylindrical concave surface. In other words, the cross-sectional shape of the groove surface 234 of this embodiment may be wavy.
然而，本發明之凹槽面的外形並不限於上段所述。圖3為本發明另一實施例之導光柱的剖面示意圖。請參照圖3，在本發明另一實施例中，凹槽面334包括彼此相連接之多個條狀凸面334a，而兩相鄰之條狀凸面334a形成凹槽U。進一步而言，各條狀凸面334a可為部份之圓柱狀凸面。需說明的是，兩相鄰之條狀凸面334a可直接相連接，或者透過位於凹槽面上的其他結構相連接。However, the shape of the groove surface of the present invention is not limited to that described in the above paragraph. 3 is a cross-sectional view of a light guiding rod according to another embodiment of the present invention. Referring to FIG. 3, in another embodiment of the present invention, the groove surface 334 includes a plurality of strip-shaped convex surfaces 334a connected to each other, and two adjacent strip-shaped convex surfaces 334a form a groove U. Further, each strip-shaped convex surface 334a may be a partial cylindrical convex surface. It should be noted that the two adjacent strip-shaped convex surfaces 334a may be directly connected or connected through other structures on the concave surface.
圖4為本發明又一實施例之導光柱的剖面示意圖。請參照圖4，在本發明又一實施例中，凹槽面434包括彼此相連接之多個表面單元434c。各表面單元434c包括傾斜方向相反且相連接之第一條狀斜平面434d與第二條狀斜平面434e。兩相鄰之表面單元434c形成凹槽U。更進一步地說，第一條狀斜平面434d與第二條狀斜平面434e可直接連接。第一條狀斜平面434d與第二條狀斜平面434e之夾角θ可介於100度至140度。4 is a cross-sectional view of a light guiding rod according to still another embodiment of the present invention. Referring to FIG. 4, in still another embodiment of the present invention, the groove surface 434 includes a plurality of surface units 434c connected to each other. Each surface unit 434c includes a first strip-shaped inclined plane 434d and a second strip-shaped inclined plane 434e that are opposite in inclination and are connected. Two adjacent surface elements 434c form a recess U. Furthermore, the first strip-shaped inclined plane 434d and the second strip-shaped inclined plane 434e can be directly connected. The angle θ between the first oblique plane 434d and the second strip oblique plane 434e may be between 100 degrees and 140 degrees.
請再參照圖1及圖2，本實施例之照明燈具1000可進一步包括反射罩300。凹槽面234位於平滑曲面232與反射罩300之間。發光元件100所發出之光束L可自入光面210進入導光柱200中，接著光束L會被位於反射面236上之反射層238反射至平滑曲面232或凹槽面234，進而由平滑曲面232或凹槽面234出射。值得一提的是，在本實施例中，自凹槽面234出射之部份光束L在離開導光柱120後可能會朝向遠離欲照明面S之方向傳遞。此時，照明燈具1000可利用反射罩300反射光束L，進而使光束L朝往欲照明面S之方向傳遞。如此一來，本實施例之照明燈具1000之中心照度便可獲得進一步地提升。Referring to FIG. 1 and FIG. 2 again, the lighting fixture 1000 of the embodiment may further include a reflective cover 300. The groove surface 234 is located between the smooth curved surface 232 and the reflective cover 300. The light beam L emitted by the light-emitting element 100 can enter the light guide column 200 from the light-incident surface 210, and then the light beam L is reflected by the reflective layer 238 on the reflective surface 236 to the smooth curved surface 232 or the concave surface 234, thereby being smoothed by the curved surface 232. Or the groove surface 234 is emitted. It should be noted that, in this embodiment, part of the light beam L emerging from the groove surface 234 may be transmitted away from the surface S to be illuminated after leaving the light guide column 120. At this time, the illumination lamp 1000 can reflect the light beam L by the reflection cover 300, and further transmit the light beam L in the direction of the surface S to be illuminated. In this way, the center illumination of the lighting fixture 1000 of the embodiment can be further improved.
詳細而言，本實施例之反射罩300可朝向遠離導光柱120之方向凸起，而有效地將光束L朝往欲照明面S之方向傳遞。但反射罩之形狀並不限於此，舉凡可將自凹槽面出射的部份光束朝往欲照明面S之方向傳遞者均可。In detail, the reflection cover 300 of the present embodiment can be convex toward the direction away from the light guide column 120, and effectively transmits the light beam L toward the direction to be illuminated S. However, the shape of the reflector is not limited thereto, and any part of the light beam emitted from the groove surface may be transmitted in the direction of the surface S to be illuminated.
圖5A與圖5B分別列出本實施例之導光柱與比較例之導光柱的剖面及其光學性質。上表1列出本實施例之導光柱與比較例之導光柱在正視方向上之出光效率、總出光效率、以及視效均勻性。上表1並列出本實施例之照明燈具與比較例之照明燈具的總出光效率。請依說明參照圖5A或上表1，圖5B及圖5A之(a)分別示出比較例導光柱與本實施例之導光柱的剖面，比較例之導光柱與本實施例之導光柱主要之差別在於本實施例之導光柱上多了凹槽面之設計。圖5B及圖5A之(b)分別示出比較例導光柱與本實施例之導光柱的出光分佈，由圖5B及圖5A之(b)可知本實施例之導光柱的出光分佈較比較例導光柱的出光分佈廣。並且，由上表1可知本實施例之導光柱無論在正向出光效率或總出光效率上皆較比較例的導光柱高。5A and 5B show the cross section of the light guide column of the present embodiment and the light guide column of the comparative example, respectively, and their optical properties. Table 1 above lists the light-emitting efficiency, total light-emitting efficiency, and visual uniformity of the light guide column of the present embodiment and the light guide column of the comparative example in the front view direction. Table 1 above also lists the total light extraction efficiency of the lighting fixture of the present embodiment and the lighting fixture of the comparative example. Referring to FIG. 5A or Table 1 above, FIG. 5B and FIG. 5A(a) respectively show cross sections of the light guide column of the comparative example and the light guide column of the present embodiment, and the light guide column of the comparative example and the light guide column of the present embodiment are mainly The difference is that the design of the groove surface is more on the light guiding column of the embodiment. 5B and FIG. 5A(b) respectively show the light distribution of the light guide column of the comparative example and the light guide column of the present embodiment, and FIG. 5B and FIG. 5A(b) show that the light distribution of the light guide column of the present embodiment is comparatively comparative. The light distribution of the light guide column is wide. Further, it can be seen from the above Table 1 that the light guiding column of the present embodiment is higher than the light guiding column of the comparative example in both the forward light extraction efficiency and the total light output efficiency.
圖5B及圖5A之(c)分別示出比較例之導光柱與本實施例之導光柱的光形圖與出光分佈，由圖5B及圖5A之(c)以及上表1可知，本實施例之導光柱的均勻性較比較例之導光柱的均勻性佳。在本實施例中，均勻性是指{1-(Lmin/Lmax)}，其中Lmax為導光柱之光強分佈中的最大值，而Lmin為導光柱之光強分佈中的最小值。請參照上表1，由上表1知，本實施例之照明燈具的總出光效率較習知照明燈具的總出光效率高，其中本實施例之照明燈具與比較例之照明燈具的主要之差別在於本實施例之照明燈具中的導光柱上多了凹槽面設計。5B and FIG. 5A(c) respectively show the light pattern and the light distribution of the light guide column of the comparative example and the light guide column of the present embodiment. As shown in FIG. 5B and FIG. 5A (c) and the above Table 1, the present embodiment For example, the uniformity of the light guide column is better than that of the light guide of the comparative example. In the present embodiment, the uniformity means {1-(L min /L max )}, where L max is the maximum value among the light intensity distributions of the light guiding columns, and L min is the minimum among the light intensity distributions of the light guiding columns value. Please refer to the above Table 1. As shown in the above Table 1, the total light-emitting efficiency of the lighting fixture of the present embodiment is higher than that of the conventional lighting fixture, and the main difference between the lighting fixture of the embodiment and the lighting fixture of the comparative example In the lighting fixture of the embodiment, a groove surface design is added to the light guiding column.
綜上所述，本發明一實施例之照明燈具藉由導光柱周面之凹槽面上的凹槽設計，不但可提升導光柱之出光效率，進而提升照明燈具之總出光效率外，且相較習用者而言，本發明之凹槽的軸向延伸設計，還可解決習用結構所無法克服的均勻性問題。此外，在本發明一實施例之照明燈具中，導光柱之周面除了具有位於後側的凹槽面外更具有位於前側之平滑曲面，而讓使用者不易察覺到凹槽面上之凹槽，進而使照明燈具的視覺效果佳。同時，兼具平滑曲面與凹槽面之導光柱亦使照明燈具的所發出之光線不致於過度擴散而影響照明燈具在正視方向上的照度，進而使本發明一實施例之照明燈具適於運用在會議室的照明上或做為檯燈之用。In summary, the illumination lamp according to an embodiment of the present invention is designed not only to improve the light extraction efficiency of the light guide column but also to improve the total light extraction efficiency of the illumination lamp, and the phase is improved by the groove design on the groove surface of the circumference of the light guide column. The axial extension design of the groove of the present invention can also solve the problem of uniformity that cannot be overcome by conventional structures. In addition, in the lighting fixture of an embodiment of the invention, the peripheral surface of the light guiding column has a smooth curved surface on the front side in addition to the groove surface on the rear side, so that the groove on the groove surface is not easily perceived by the user. In turn, the lighting fixture has a good visual effect. At the same time, the light guide column with the smooth curved surface and the concave surface also prevents the light emitted by the illumination lamp from being excessively diffused, thereby affecting the illumination of the illumination lamp in the front view direction, thereby making the illumination lamp of the embodiment of the invention suitable for use. In the lighting of the conference room or as a desk lamp.
此外，本發明一實施例之照明燈具可進一步包括反射罩。反射罩可將自凹槽面出射的部分光束反射往欲照明面，進而更進一步地提升照明燈具之中心照明。Furthermore, the lighting fixture of an embodiment of the invention may further comprise a reflector. The reflector can reflect part of the light beam emerging from the groove surface to the surface to be illuminated, thereby further improving the central illumination of the lighting fixture.
雖然本發明已以較佳實施例揭露如上，然其並非用以限定本發明，任何熟習此技藝者，在不脫離本發明之精神和範圍內，當可作些許之更動與潤飾，因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application.
1000．．．照明燈具1000. . . Lighting fixture
100．．．發光元件100. . . Light-emitting element
200．．．導光柱200. . . Light guide column
210．．．入光面210. . . Glossy surface
220．．．端面220. . . End face
230．．．周面230. . . Weekly
232．．．平滑曲面232. . . Smooth surface
234、334、434．．．凹槽面234, 334, 434. . . Groove surface
234a、334a．．．條狀凸面234a, 334a. . . Strip convex
234b．．．條狀凹面234b. . . Strip concave
434c．．．表面單元434c. . . Surface unit
434d．．．第一條狀斜平面434d. . . First oblique plane
434e．．．第二條狀斜平面434e. . . Second strip plane
236．．．反射面236. . . Reflective surface
238．．．反射層238. . . Reflective layer
300．．．反射罩300. . . Reflector
A．．．剖面A. . . section
D．．．凹槽之深度D. . . Depth of the groove
D1、D2、x、y、z．．．方向D1, D2, x, y, z. . . direction
L．．．光束L. . . beam
P．．．凹槽之間距P. . . Distance between grooves
S．．．欲照明面S. . . Lighting surface
U．．．凹槽U. . . Groove
X．．．發光元件之光軸X. . . Optical axis of the light-emitting element
θ．．．夾角θ. . . Angle
圖1為本發明一實施例之照明燈具的立體示意圖。1 is a perspective view of a lighting fixture according to an embodiment of the invention.
圖2為圖1之照明燈具的剖面示意圖。2 is a schematic cross-sectional view of the lighting fixture of FIG. 1.
圖3為本發明另一實施例之導光柱的剖面示意圖。3 is a cross-sectional view of a light guiding rod according to another embodiment of the present invention.
圖4為本發明又一實施例之導光柱的剖面示意圖。4 is a cross-sectional view of a light guiding rod according to still another embodiment of the present invention.
圖5A與圖5B分別列出本發明一實施例之導光柱與比較例之導光柱的剖面及其光學性質。5A and 5B show a cross section and optical properties of a light guiding rod and a light guiding column of a comparative example, respectively, according to an embodiment of the present invention.
1000．．．照明燈具1000. . . Lighting fixture
100．．．發光元件100. . . Light-emitting element
200．．．導光柱200. . . Light guide column
210．．．入光面210. . . Glossy surface
220．．．端面220. . . End face
230．．．周面230. . . Weekly
300．．．反射罩300. . . Reflector
D1、D2、x、y、z．．．方向D1, D2, x, y, z. . . direction
U．．．凹槽U. . . Groove
X．．．發光元件之光軸X. . . Optical axis of the light-emitting element
S．．．欲照明面S. . . Lighting surface
Claims (10)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100147180A TW201326675A (en) | 2011-12-19 | 2011-12-19 | Lighting fixture |
| US13/714,436 US20130155716A1 (en) | 2011-12-19 | 2012-12-14 | Lighting fixture |
| DE102012223555A DE102012223555A1 (en) | 2011-12-19 | 2012-12-18 | lighting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100147180A TW201326675A (en) | 2011-12-19 | 2011-12-19 | Lighting fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TW201326675A true TW201326675A (en) | 2013-07-01 |
Family
ID=48522352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW100147180A TW201326675A (en) | 2011-12-19 | 2011-12-19 | Lighting fixture |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20130155716A1 (en) |
| DE (1) | DE102012223555A1 (en) |
| TW (1) | TW201326675A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676732A (en) * | 2016-08-02 | 2018-02-09 | 法雷奥照明湖北技术中心有限公司 | Photo-patterning device and illumination and/or signal designation equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10605414B1 (en) | 2016-04-22 | 2020-03-31 | Eaton Intelligent Power Limited | Suspended luminaire having end caps with LEDs illuminating a lightguide plate |
| USD812802S1 (en) * | 2016-04-22 | 2018-03-13 | Cooper Technologies Company | Suspended arc-shaped luminaire |
| US20190346089A1 (en) * | 2018-05-08 | 2019-11-14 | Elite Lighting | Light Fixture |
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|---|---|---|---|---|
| US4242725A (en) * | 1977-12-01 | 1980-12-30 | Sun Chemical Corporation | Light reflector structure |
| US4805984A (en) * | 1985-11-21 | 1989-02-21 | Minnesota Mining And Manufacturing Company | Totally internally reflecting light conduit |
| US5233679A (en) * | 1990-04-10 | 1993-08-03 | Nobuo Oyama | Striated light diffuser and method of forming the same |
| US6031958A (en) * | 1997-05-21 | 2000-02-29 | Mcgaffigan; Thomas H. | Optical light pipes with laser light appearance |
| GB0329205D0 (en) * | 2003-12-17 | 2004-01-21 | Graham Morton | An illumination device |
| JP4093990B2 (en) * | 2004-05-26 | 2008-06-04 | 日本板硝子株式会社 | Light guide, line illumination device, and image reading device |
| TWI270992B (en) * | 2005-07-19 | 2007-01-11 | Chi Mei Optoelectronics Corp | Light emitting diode package and light guide pipe and backlight module and liquid crystal display device using the same |
| US7658514B2 (en) * | 2006-04-13 | 2010-02-09 | Lg Electronics Inc. | Light guide, method and apparatus for manufacturing the same, and illuminating system having the same |
| CN101191905B (en) * | 2006-11-30 | 2010-09-15 | 香港应用科技研究院有限公司 | Light strip and backlight module and display using same |
| TW200909857A (en) * | 2007-08-23 | 2009-03-01 | Prodisc Technology Inc | Light source module of scanning device |
| KR100988621B1 (en) * | 2008-05-07 | 2010-10-20 | 엘지전자 주식회사 | Optical pipe and illuminating apparatus comprising the same |
| US8070341B2 (en) * | 2008-12-18 | 2011-12-06 | Visteon Global Technologies, Inc. | Light pipe with uniformly lit appearance |
| CN102681080B (en) * | 2011-03-10 | 2014-06-18 | 光宝电子(广州)有限公司 | Linear light source, light guiding body and optical scanning module |
-
2011
- 2011-12-19 TW TW100147180A patent/TW201326675A/en unknown
-
2012
- 2012-12-14 US US13/714,436 patent/US20130155716A1/en not_active Abandoned
- 2012-12-18 DE DE102012223555A patent/DE102012223555A1/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676732A (en) * | 2016-08-02 | 2018-02-09 | 法雷奥照明湖北技术中心有限公司 | Photo-patterning device and illumination and/or signal designation equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102012223555A1 (en) | 2013-06-20 |
| US20130155716A1 (en) | 2013-06-20 |
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